Merge branch 'ce-10446-resolve-ee-diff-repository-check-mailer-notify' into 'master'

[CE] Resolve CE/EE in repo check mailer notify html

See merge request gitlab-org/gitlab-ce!29195

app/views/repository_check_mailer/notify.html.haml

@@ -6,3 +6,5 @@
 
 %p
   = _("You are receiving this message because you are a GitLab administrator for %{url}.") % { url: Gitlab.config.gitlab.url }
+
+= render_if_exists 'repository_check_mailer/email_additional_text'